Check for observer being undefined in notifyPaths function

.vscode/settings.json

@@ -1,6 +1,6 @@
 {
 	"typescript.tsdk": "node_modules\\typescript\\lib",
 	"editor.codeActionsOnSave": {
-		"source.fixAll": true
+		"source.fixAll": "explicit"
 	}
 }

src/hooks/useObservers.ts

@@ -49,7 +49,7 @@ export const useObservers = <T>(): ObserversControl<T> => {
 			observersMap.current.set(path, new ObserverArray());
 		}
 
-		return observersMap.current.get(path).add(observer as Observer<unknown>);
+		return observersMap.current.get(path)!.add(observer as Observer<unknown>);
 	}, []);
 
 	const stopObserving = useCallback(<V>(path: Pxth<V>, observerKey: ObserverKey) => {
@@ -90,8 +90,10 @@ export const useObservers = <T>(): ObserversControl<T> => {
 			batchUpdate({ paths, origin, values });
 			paths.forEach((path) => {
 				const observer = observersMap.current.get(path);
-				const subValue = deepGet(values, path);
-				observer.call(subValue);
+				if (observer) {
+					const subValue = deepGet(values, path);
+					observer.call(subValue);
+				}
 			});
 		},
 		[batchUpdate],

src/typings/PxthMap.ts

@@ -6,7 +6,7 @@ export class PxthMap<Value> {
 	private _values: Record<string, Value> = {};
 	private _keys: Record<string, Pxth<unknown>> = {};
 
-	public get = <V>(key: Pxth<V>): Value => {
+	public get = <V>(key: Pxth<V>): Value | undefined => {
 		return this._values[hashPxth(key)];
 	};
 

src/utils/areProxyMapsEqual.ts

@@ -13,7 +13,7 @@ export const areProxyMapsEqual = (map1: ProxyMapSource<unknown>, map2: ProxyMapS
 
 	for (const [key, value] of proxyMap1.entries()) {
 		const value2 = proxyMap2.get(key);
-		if (!proxyMap2.has(key) || !samePxth(value, value2)) {
+		if (!proxyMap2.has(key) || !samePxth(value, value2!)) {
 			return false;
 		}
 	}